公开(公告)号：CA1341499C

公开(公告)日：2006-02-28

申请号：CA588409

申请日：1989-01-17

Applicant: IBM

Inventor： PARKIN STUART S P ,  NAZZAL ADEL I ,  LEE VICTOR Y-W ,  ENGLER EDWARD M

IPC: H01B12/00 ,  B22D23/06 ,  B22D41/00 ,  C01G1/00 ,  C01G15/00 ,  C04B35/45 ,  C22C1/02 ,  H01L39/12

Abstract: Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850-900 DEG C. The final oxides are in the molar ratio Tl0.6-1.1Ca2-3Ba0.75-1.25Cu2-3O(5+ delta )-(9+ delta ), where delta is less than one.

公开(公告)号：CA1333977C

公开(公告)日：1995-01-17

申请号：CA600087

申请日：1989-05-18

Applicant: IBM

Inventor： ENGLER EDWARD M ,  KODAS TOIVO T ,  LEE VICTOR Y-W

IPC: C04B35/00 ,  C01G1/00 ,  C04B35/45 ,  H01B12/12 ,  H01B13/00 ,  H01L39/24

Abstract: A process for forming a composite high temperature superconductor copper wire, said process comprising the steps of (1) directing a submicron sized powder of a superconducting ceramic material through a length of copper tubing to coat the interior surface of said tubing with a uniform compact film of said powder, and (2) sintering said powder while passing oxygen through said tube and while maintaining the outside of said tube in an inert atmosphere. In a preferred embodiment an aerosol process is used to generate the submicron sized powder of the superconductor.